When energy prices fluctuate, small scale storage, such as provided by electric vehicles or uninterruptible power supplies, allows users to reduce their overall costs by buying in price troughs. However, if future prices are rising, a user may be inclined to store energy long-term. By analysing the structural properties of the charging schedule for energy storage systems,this paper demonstrates...

With the advancement in technology, the field of robotics has evolved differently in multiple domains. For use in industries huge and autonomous robotic systems are developed. On the other hand, the increased demand of robotics in rescues, space and warfare has urged the development of compact and sophisticated systems. That’s where the concept of tethered robot arises. Several advantages of te...

During the 1980s, electronic power conversion became commonplace in industrial, commercial, and institutional networks. These new loads, known as power converters, impact all electrical networks, usually in a negative manner. Power converters tend to be disruptive to the utility network and sometimes to other consumers. When power electronic loads are present, attempts to correct power factor i...

The paper deals with the problem of designing digital circuits with the currentmode gates novel digital gates operating with constant, continuous power supply current. The purpose is the provision of a high level of noise immunity of the chips which compose both analog and digital circuits. The logical properties of the current-mode gates and logic (algebra) are investigated, which are a base t...

Due to a continuously increasing power demand of computer–network server equipment, power supply manufacturers are faced with requirements for ac/dc server power supplies with significantly higher power densities. In this paper, circuit technologies and optimization techniques that are suitable for meeting these new power-density requirements are discussed. The focus of the paper is on single-p...

Students often struggle with core concepts in thermal and fluid sciences courses. Through a National Science Foundation funded project we are developing a suite of experiments designed to expose student misperceptions about core concepts, and to hopefully improve the students’ understanding of the basic principles. The experiments use common devices that the students are familiar with. By using...

In automated storage and retrieval systems energy in descending and deceleration phases of cranes can be recovered into the power supply system instead of being dissipated as waste heat. Such technological opportunity should be exploited by properly modifying control policies in order to improve energy efficiency of warehousing operations. In this paper the impact of energy recovery on the stor...